Hydrogen embrittlement susceptibility of a hot-rolled ultra-high strength complex phase steel

doi:10.13251/j.issn.0254-6051.2021.08.010

Abstract

Abstract: Hydrogen escape behaviour and hydrogen trap of the hot-rolled ultra-high strength complex phase steel M950 were studied by means of electrochemical hydrogen charging experiment and thermal desorption spectroscopy (TDS). The hydrogen embrittlement susceptibility of the tested steel was analysed by means of slow strain rate tensile (SSRT) test. And the fracture morphology was observed using field emission scanning electron microscope (FESEM). The results show that hydrogen trap activation energy of the tested steel is 15.0 kJ/mol. The main hydrogen trap of the steel is grain boundary. With the prolongation of electrochemical hydrogenation time, the hydrogen content of the tested steel increases gradually, and the plasticity decreases significantly, but the decline of tensile strength is not obvious. The tensile fracture morphology changes from pore-concentrating ductile fracture to quasi-cleavage and intergranular brittle fracture.

Key words: ultra-high strength complex phase steel, hydrogen embrittlement susceptibility, thermal desorption spectroscopy, hydrogen trap, slow strain rate tensile test

CLC Number:

TG142.1

Wang Haibo, Xu Zhenlin, Hu Xuewen, Peng Huan. Hydrogen embrittlement susceptibility of a hot-rolled ultra-high strength complex phase steel[J]. Heat Treatment of Metals, 2021, 46(8): 51-55.

References

[1]Scott H, Sidhu G, Fazeli F, et al. Microstructural evolution of a hot-rolled microalloyed complex phase steel[J]. Canadian Metallurgical Quarterly, 2017, 56(1): 67-75.
[2]黄玉龙, 张玉龙. 超高强度复相钢CP800的相变行为及热轧工艺研究[J]. 上海金属, 2018, 40(4): 68-73.
Huang Yulong, Zhang Yulong. Study on the transformation behavior and hot rolling process for ultra-high strength complex phase steel CP800[J]. Shanghai Metals, 2018, 40(4): 68-73.
[3]刘家骅, 王磊, 杨玉芳, 等. 载荷速率对充氢SA508-3 钢断裂韧性的影响[J]. 金属热处理, 2020, 45(10): 232-235.
Liu Jiahua, Wang Lei, Yang Yufang, et al. Hydrogen induced delayed fracture behavior of cold hardening microalloyed bainitic steel[J]. Heat Treatment of Metals, 2020, 45(10): 232-235.
[4]Allen Q S, Nelson T W. Microstructural evaluation of hydrogen embrittlement and successive recovery in advanced high strength steel[J]. Journal of Materials Processing Technology, 2019, 265: 12-19.
[5]Dwivedi S K, Vishwakarma M. Hydrogen embrittlement in different materials: A review[J]. International Journal of Hydrogen Energy, 2018, 43(46): 21603-21616.
[6]Song J, Curtin W A. Atomic mechanism and prediction of hydrogen embrittlement in iron[J]. Nature Materials, 2013, 12(2): 145-151.
[7]Liu Q, Zhou Q, Venezuela J, et al. The role of the microstructure on the influence of hydrogen on some advanced high-strength steels[J]. Materials Science and Engineering A, 2018, 715: 370-378.
[8]Liu Q, Venezuela J, Zhang M, et al. Hydrogen trapping in some advanced high strength steels[J]. Corrosion Science, 2016, 111: 770-785.
[9]Venezuela J, Zhaou Q, Liu Q, et al. Influence of hydrogen on the mechanical and fracture properties of some martensitic advanced high strength steels in simulated service conditions[J]. Corrosion Science, 2016, 111: 602-624.
[10]Venezuela J, Blangch J, Zulkiply A, et al. Further study of the hydrogen embrittlement of martensitic advanced high-strength steel in simulated auto service conditions[J]. Corrosion Science, 2018, 135: 120-135.
[11]孙永伟, 陈继志, 刘军. 1000 MPa级0Cr16Ni5Mo钢的氢脆敏感性研究[J]. 金属学报, 2015, 51(11): 1315-1324.
Sun Yongwei, Chen Jizhi, Liu Jun. Study on hydrogen embrittlement susceptibility of 1000 MPa grade 0Cr16Ni5Mo steel[J]. Acta Metallurgica Sinica, 2015, 51(11): 1315-1324.
[12]Liu Q, Zhou Q, Venezuela J, et al. Evaluation of the influence of hydrogen on some commercial DP, Q&P and TWIP advanced high-strength steels during automobile service[J]. Engineering Failure Analysis, 2018, 94: 249-273.
[13]Momotani Y, Shibata A, Terada D, et al. Effect of strain rate on hydrogen embrittlement in low-carbon martensitic steel[J]. International Journal of Hydrogen Energy, 2017, 42(5): 3371-3379.
[14]Kissinger H E. Reaction kinetics in differential thermal analysis[J]. Analytical Chemistry, 1957, 29(11): 1702-1706.
[15]Choo W Y, Lee J Y. Thermal analysis of trapped hydrogen in pure iron[J]. Metallurgical Transactions A, 1982, 13(1): 135-140.
[16]Escobar D P, Verbeken K, Duprez L, et al. Evaluation of hydrogen trapping in high strength steels by thermal desorption spectroscopy[J]. Materials Science and Engineering A, 2012, 551: 50-58.
[17]谭文志, 杜元龙, 傅超, 等. 阴极保护导致 ZC-120 钢在海水中环境氢脆[J]. 材料保护, 1988, 21(3): 10-13.
Tan Wenzhi, Du Yuanlong, Fu Chao, et al. Environment embrittlement caused by cathodic protection of ZC-120 steel in sea water[J]. Materials Protection, 1988, 21(3): 10-13.
[18]Loidl M, Kolk O, Veith S, et al. Characterization of hydrogen embrittlement in automotive advanced high strength steels[J]. Materialwissenschaft und Werkstofftechnik, 2011, 42(12): 1105-1110.
[19]Yazdipour N, Dunne D P, Pereloma E V. Effect of grain size on the hydrogen diffusion process in steel using cellular automaton approach[C]//Materials Science Forum. Trans Tech Publications, 2012, 706: 1568-1573.
[20]Bai Y, Tian Y, Gao S, et al. Hydrogen embrittlement behaviors of ultrafine-grained 22Mn-0.6C austenitic twinning induced plasticity steel[J]. Journal of Materials Research, 2017, 32(24): 4592-4604.